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NEWS

2022-03-18

Final day for a student

All the members enjoyed every day with him.
Hope his continued success.


2022-02-28

Presentation for bachelor thesis

First presentation for bachelor thesis as members of our lab.
All of the students gave great presentations!

 


2022-02-07

New members

First meeting with new student members.
Hope they enjoy our lab. from this spring. 


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RESEARCH

Our group develops stimuli-responsive molecular-based materials, such as crystals, liquid crystals, organogels and etc. We try to elucidate so far unknown responses of such materials and provide novel functionality of molecules.

Molecular-based materials exhibiting stimuli-responsivity

Molecular crystals or liquid crystals often show properties and functionality different from its individual molecule itself. This is caused by the neighboring molecules within the assembled materials which are connected through various intermolecular interactions. This indicates that the molecular-based materials can show properties/functionalities based on assembled states. Upon applying external stimulations to such materials, such as temperature change, photoirradiation and mechanical stimulations, the assembled states/molecular arrangements can change. As a result, these molecular-based materials exhibit various responses, i.e., property changes and mechanical movement.

Bridging the gap between macroscopic externals stimulation and microscopic molecular arrangement

We have reported that the molecular-based materials exhibiting emission color changes, electronic conductivity changes, and mechanical movements upon applying mechanical stimulation. These stimuli-responses are caused by the “macroscopic” mechanical force by means of a spatula or a pestle/mortar, which leading to changes in “macroscopic” molecular arrangements and patterns of intermolecular interactions. Our group tries to elucidate precise molecular arrangements within the crystals/liquid crystals to identify the effect of external stimulation, bridging the gap between macro- and microscopic information.

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Publications

2021

80. Functional Flexible Molecular Crystals: Intrinsic and Mechanoresponsive Properties,
T. Seki, N. Hoshino, Y. Suzuki, S. Hayashi,
CrystEngComm, 2021, 23, 5686–5696
DOI: 10.1039/D1CE00388G.
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79. (9-Isocyanoanthracene)gold(I) Complexes Exhibiting Two Modes of Crystal Jumps by Different Structure Change Mechanisms,
K. Kato, T. Seki, H. Ito,
Inorg. Chem, 2021, 60, 10849–10856
DOI: 10.1021/acs.inorgchem.1c00881.
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78. Synthesis and Optical Properties of C,N-Swapped Boranils Derived from Potassium Acyltrifluoroborates,
S. Matsuura, J. Taguchi, T. Seki, H. Ito,
Bull. Chem. Soc. Jpn., 2021, 94, 1547–1552
DOI: 10.1246/bcsj.20210024.
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2020

77. Thermosalience in Macrocycle-Based Soft Crystals via Anisotropic Deformation of Disilanyl Architecture,
K. Omoto, T. Nakae, M. Nishio, Y. Yamanoi, H. Kasai, E. Nishibori, T. Mashimo, T. Seki, H. Ito, K. Nakamura, N. Kobayashi, N. Nakayama, H. Goto, H. Nishihara,
J. Am. Chem. Soc., 2020, 142, 12651–12657
DOI: 10.1021/jacs.0c03643.
Abstract

Sorry, this entry is only available in Japanese.

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